Windproof stove

ABSTRACT

The present invention provides a windproof stove, which has practical application in resisting lateral airflow, and includes a plurality of foot rests distributed in an encircling configuration to form a stove body. An encircling ring is suspended interior of the foot rests, and a combustion device is located interior of the encircling ring. An annular air port is formed between a periphery of the combustion device and the encircling ring, and a surface of the encircling ring is used to block lateral airflow.

BACKGROUND OF THE INVENTION

(a) Field of the Invention

The present invention relates to a windproof stove, and moreparticularly to a windproof stove able to achieve effectiveness ofresisting lateral wind pressure.

(b) Description of the Prior Art

With reference to stove units that use flames to heat and causecombustion, sufficient air must be available to satisfy the requirementsto cause a vigorous oxidation reaction. However, because an air mixtureof specific ratio must be supplied, thus, the combustion assembly of thestove units must be configured with an emerging or protruding upper endopening. In general, if gas cooking devices or liquid fuel stove units,such as spirit stoves, gas stoves, and the like, are used in a locationwhere the surrounding airflow is relatively strong, then lateral windpressure inevitably blows out the flames of the fire hole or disturbsoperating line of the flames.

Referring to FIG. 1, which shows heating operation of a pot 100 disposedon top of a stove unit 1, and a ring-shaped plate grid 10 is constructedat a periphery of the stove unit 1 in order to resist lateral airflow.However, such a structure is inconvenient to carry, and a bottom portionof the plate grid 10 intercepts and seals off airflow from entering thestove unit 1, thereby disabling the stove unit 1 from ensuring effectivecombustion. Even if an air port is defined in a lower portion of theplate grid 10, then air will pass directly through the air port andattack flames of the stove unit 1.

SUMMARY OF THE INVENTION

Accordingly, a primary objective of the present invention is to providea windproof stove that particularly uses an encircling ring configuredat position of the combustion chamber relative to an upper end surfaceof a combustion device to serve as a lateral containment. Moreover, anannular air port is configured between the encircling ring and thecombustion device, and is used to enable airflow to enter therethrough,thereby enabling the stove to obtain sufficient oxygen during theprocess of combustion.

Another objective of the present invention is to provide the windproofstove with an upper and a lower encircling ring having diameters ofdifferent size to enable another annular air port to be formed by theinterspace between the mutually sleeved upper and lower encirclingrings, thereby providing sufficient oxygen to propagate substantiallylonger flames and contain flame tips.

A third objective of the present invention is to provide the windproofstove that enables the encircling rings directly supported by supportbars extending from foot rests, and mechanical force of the encirclingrings enables assemblage of the foot rests.

A fourth objective of the present invention is to provide the windproofstove that enables expansion of feet of a stove body, moreover, thestove body can be inverted for use thereof.

A fifth objective of the present invention is to provide the windproofstove that enables height adjustment between the encircling rings andthe joined support bars.

A sixth objective of the present invention is to provide the windproofstove wherein end openings of the crossover of the encircling rings arerespectively configured valve plates.

To enable a further understanding of said objectives and thetechnological methods of the invention herein, brief description of thedrawings is provided below followed by detailed description of thepreferred embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a schematic view of a windproof method of prior art.

FIG. 2 shows a side view of an assemblage according to the presentinvention.

FIG. 3 shows a schematic view of a further embodiment according to thepresent invention.

FIG. 4 shows a schematic view of another structure of a stove bodyaccording to the present invention.

FIG. 5 shows a schematic view of a further embodiment of upper and lowerencircling rings according to the present invention.

FIG. 6 shows a schematic view of foot rests in contact with the groundaccording to the present invention.

FIG. 7 shows an application drawing of an inversion of FIG. 6 accordingto the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIG. 2, which shows the present invention primarilystructured to comprise a plurality of foot rests 3 radially distributedin an encircling configuration to form a stove body 2. An upper end ofeach of the foot rests 3 is joined to a grate 31, and a lower end isjoined to a foot 32. Interior of the stove body 2 is joined to anencircling ring 4 using a suspension method, and an interior of theencircling ring 4 enables disposition of a combustion device 22 therein.A lower end of the entire structure is provided with a base plate 21that is able to support the weight of the entire structure and receivedrips from cooking, thereby preventing staining a tabletop and enablingincreasing area of contact with the ground, in addition to providing athermal insulation effect.

An annular air port 40 is formed between a periphery 220 of thecombustion device 22 and an inner edge of the encircling ring 4. Flamesare produced at an upper end surface 222 of the combustion device 22,and the upper end surface 222 is positioned within the range of theheight of the encircling ring 4 close to a center position, therebyenabling the encircling ring 4 to contain flames produced and resistlateral airflow.

Oxygen required for combustion enters through the annular air port 40,bringing about an exchange at position of the upper end surface 222,whereupon vigorous oxidation takes place that produces thermal energy.Based on the configuration of the present invention, lateral strong windis unable to directly attack the flames of the combustion device 22,thereby enabling the flames to maintain normal thermal work.

Blocking of lateral airflow passing through the encircling ring 4 formsa vertical angle resistance, and the surface of the encircling ring 4disperses the pressure flow line of the lateral airflow. Afterdisintegration velocity of flow is reduced, at which time a portion ofthe airflow enters through the annular air port 40, and a portiontransversally brushes past between a bottom portion of the pot 100 andan end opening 42 of the encircling ring 4. The transversal airflow atthe bottom portion of the pot 100 forms a back pressure effect withinthe encircling ring 4, thereby increasing recharge of rate of airflow atthe bottom end of the annular air port 40. However, the rapid rechargeof rate of airflow does not affect normal combustion at the upper endsurface 222. By use of such basic conditions, the present invention isable to achieve implementation of a lateral windproof stove unit.

The combustion device 22 is positioned interior of the encircling ring4, thereby enabling the periphery 220 of the combustion device 22 toreceive support from support bars 321 extending from a bottom portion.The supporting method further uses supportive bars 322 extending fromthe support bars 321 or enable detaining of the periphery 220 of thecombustion device 22 or shouldering of a lip 221 of the combustiondevice 22, thereby causing the combustion device 22 to be in asuspending state, and enabling the bottom portion of the combustiondevice 22 not to come in contact with the ground.

A movable fixed method can also be formed between the supportive bars322 and the periphery 220 of the combustion device 22, thereby enablingadjusting vertical displacement the combustion device 22 relative todistance to the bottom portion of the pot 100.

The encircling ring 4 is fixedly supported by the support bars 321extending from the bottom portion, or a movable fixed method can be usedto support and fix position of the encircling ring 4, thereby enablingadjusting height of the encircling ring 4 to a horizontal L1 or L2position, and thus realize functionality to alter distance relative tothe bottom portion of the pot 100, or to enable use of the combustiondevice 22 at different heights whereby adjustment of position of theupper end surface 222 is realized.

Relative position of the end opening 42 of the encircling ring 4primarily enables the encircling ring 4 to maintain an appropriaterelative height position above the upper end surface 222 of thecombustion device 22, thereby enabling containment of flames andadjustment relative to the bottom portion of the pot 100. In order toaccommodate different sizes of the pot 100, oblique height of the grate31 can be correspondingly changed to an appropriate difference in heightposition to the bottom portion of the pot 100.

Height H of the adjustable height of the encircling ring 4 is accordingto that supported by length of the support bars 321.

When using the present invention outdoors or on the ground, then thefeet 32 can be placed directly on the ground to support the stove body2, thereby eliminating the need for the base plate 21.

The combustion device 22 supports use of canned fuel or a “fire bowl” orother solid fuel, wherein if canned fuel or a fire bowl is used, thenthe interior fuel can be liquid fuel, such as alcohol or solid alcohol,or hot meltable solid fuel, such as wax fuel, oil fuel, and the like.

Conditions for implementation of the combustion device 22 are that it isable to be disposed within the encircling ring 4 or able to beshouldered and supported by the support bars 321.

Referring to FIG. 3, which shows the stove body 2 structured from theplurality of foot rests 3 radially distributed in an encirclingconfiguration, interior of which is configured at least one encirclingring 4 which contains the combustion device 22. The annular air port 40,which enables the supply of oxygen, is formed between the combustiondevice 22 and an inner surface of the encircling ring 4. If the flamesof the combustion device 22 are relatively long, then in order tosimilarly contain tips of the flames and supply adequate oxygen to thetips, then an upper encircling ring 5 of relatively larger diameter canbe coaxially sleeved on top of the encircling ring 4. Moreover, becausediameter of the upper encircling ring 5 is relatively larger, thus,another annular air port 50 is formed by the interspace between themutually sleeved upper and lower encircling rings 4, 5, thereby enablingthe two annular air ports 40, 50 to synchronously allow air to enter andbe supplied therethrough.

The upper encircling ring 4 and the lower encircling ring 5 arerespectively fixedly supported by the foot rests 3, or other supportingmember methods can be adopted to provide fixing thereof. Height of thecombustion device 22 can be similarly adjusted, and height position ofthe lower encircling ring 4 can be correspondingly adjusted.

The foot rests 3 are formed from bars 30, an upper portion of each ofwhich is joined to the grate 31, and lower portions form the feet 32.Peripheral hoops 23 between the foot rests 3 are used to bind the footrests 3, or structural capacity of the upper and lower encircling rings4, 5 can be directly used to bind the foot rests 3, thereby structuringthe stove body 2.

Referring to FIG. 4, which shows the stove body 2 structured from theplurality of foot rests 3, wherein each of the foot rest 3 are formed bybending wire bars, such as metal wire; upper ends of the bars 30 arebent to form the grate 31, and the lower ends are bent to form the feet32, and the entire structure is supported by the base plate 21. The feet32 of the lower ends inwardly extend to form the support bars 321, whichare used to fix the lower encircling ring 4, and the upper encirclingring 5 is fixedly supported by support bars 311 extending from the grate31.

The support bars 321 extending from the feet 32 are able tocorrespondingly fix position of the combustion device 22. The annularair port 40 is formed between the combustion device 22 and theencircling ring 4, and the other annular air port 50 is formed by theinterspace between the encircling ring 4 and the inner surface of theupper encircling ring 5.

A movable fixed functional cooperation can be similarly formed betweenthe aforementioned upper and lower encircling rings 4, 5 and the supportbars 311, 321 to enable adjusting height position thereof.

The encircling rings 4, 5 of the plurality of foot rests 3 can serve asa mechanical force assemblage support, and the binding provided by thehoops 23 is used to form the solid stove body 2.

Referring to FIG. 5, which shows implementation of the aforementionedupper and lower encircling rings 4, 5, height position of each of whichcan be adjusted, and relative end openings of the upper and lowerencircling rings 4, 5 are respectively configured with mutuallycorresponding valve plates 41, 51. Mutual spacing between the valveplates 41, 51 forms a curved flow path A1, thereby enabling air A topass therethrough in a snake-like fashion, and drawing out or drawing inof the upper and lower encircling rings 4, 5 enables modifyingcross-sectional area of the through hole of the curved flow path A1,thereby enabling adjusting airflow rate of the annular air port 50.

The valve plates 41, 51 can be configured with airflow auxiliary holes410, 510 respectively, thereby assisting air flow into the upper endsurface 222 of the combustion device 22. Moreover, movable fixing of theencircling rings 4, 5 enables counterrotating thereof, and use ofcounterrotating of the encircling rings 4, 5 enables modifying relativepositions of the auxiliary holes 410, 510. Furthermore, the auxiliaryholes 410, 510 are configured at equal angular positions, therebyallowing the upper and lower auxiliary holes 410, 510 to overlap andform through holes, or the upper and lower auxiliary holes 410, 510 canbe closed over by adjusting to mutual corresponding angular positions,thereby achieving functionality to form an enclosed assembled singleencircling ring between the upper and lower encircling rings 4, 5.

Referring to FIG. 6, which shows the foot rests 3 structured to form thestove body 2, wherein the feet 32 are expanded to increase area ofcontact with the ground, thereby enabling a substantially largerplacement range of center of gravity. Interior of the stove body 2similarly enables loading of the combustion device 22, and in order tostrengthen peripheral structural capacity of the stove body 2, the hoops23 are used to bind the combustion device 22. The upper and lowerencircling rings 5, 4 interior of the stove body 2 are similarly joinedand suspended interior of the stove body 2 like the aforementionedwindproof stove assemblage method. The foot rests 3 are formed by thebars 30, and upper ends of the foot rests 3 are bent to form the grate31, and the lower ends are bent to form the feet 32.

Referring to FIG. 7, wherein an inversion of the stove body 2 of theembodiment depicted in FIG. 6 is adopted to accommodate the mechanicalcondition of bearing the weight of the pot 100, whereby the feet 32 faceupward and the grate 31 is in contact with the ground, thereby enablingthe stove body 2 to bear the weight of a large-sized pot 100 disposedthereon. The lip 221 of the combustion device 22 is used to shoulder thesupportive bars 322 of the support bars 321 to form a suspending state,and air is supplied by simply entering through the annular air port 40.The other encircling ring 5 serves as a supplementary measure to blocklateral wind pressure, and lateral air is able to enter through theannular air port 50 or from a lower end of the encircling ring 5 tosupplement the supply of air.

It is of course to be understood that the embodiments described hereinare merely illustrative of the principles of the invention and that awide variety of modifications thereto may be effected by persons skilledin the art without departing from the spirit and scope of the inventionas set forth in the following claims.

What is claimed is:
 1. A windproof stove, comprising a windproof stovethat is able to effectively resist lateral wind pressure, therebyensuring normal combustion operation of flames, and thus applicable foruse in a location having a strong surrounding airflow; wherein thewindproof stove comprises: at least more than three foot restsdistributed in an encircling configuration to form a stove body, anupper end of each of the foot rests is joined to a grate, and a lowerend is joined to a foot; at least one encircling ring joined andsuspended interior of the stove body; a combustion device positionedinterior of the encircling ring, an upper end surface of the combustiondevice is positioned within the range of the height of the encirclingring close to a center position, and an annular port is formed by theinterspace between a periphery of the combustion device and an innersurface of the encircling ring.
 2. The windproof stove according toclaim 1, wherein support bars extending from the foot rests orsupportive bars support the periphery or a lip of the combustion device.3. The windproof stove according to claim 1, wherein the support barsextending from a bottom portion of the stove body support and fixposition of the encircling ring.
 4. The windproof stove according toclaim 3, wherein a movable correlation is formed between the encirclingring and the support bars.
 5. The windproof stove according to claim 1,wherein two encircling rings of different diameter are coaxiallysuspended and mutually correspondingly sleeved interior of the stovebody, and another annular air port is formed between the two mutuallysleeved encircling rings.
 6. The windproof stove according to claim 5,wherein the support bars extending downward from an upper portion of thestove body support and fix position of the upper encircling ring.
 7. Thewindproof stove according to claim 6, wherein a movable correlation isformed between the upper encircling ring and the support bars.
 8. Thewindproof stove according to claim 1, wherein hoops are used between theplurality of foot rests to bind and assemble the foot rests.
 9. Thewindproof stove according to claim 1, wherein a stove body is formed bybending wire bars.
 10. The windproof stove according to claim 5, whereinadjoining ends of the upper and lower encircling rings are respectivelyconfigured with mutually corresponding valve plates.
 11. The windproofstove according to claim 10, wherein airflow auxiliary holes are definedin the valve plates respectively configured in the upper and lowerencircling rings.
 12. The windproof stove according to claim 11, whereinthe airflow auxiliary holes are configured at equal angular positions.13. The windproof stove according to claim 1, wherein the combustiondevice is a fire bowl, interior of which is disposed fuel.
 14. Thewindproof stove according to claim 1, wherein the combustion device iscanned fuel.